- Added a global var WErrorCode similar to errno or RErrorCode.

- New function wsyserrorwithcode(), like wsyserror() for prints the message
  for the specified error code, instead of errno. This is for cases where
  you can't call wsyserror() immediately after the error, but save errno
  code for a later use.

WINGs/error.c

@@ -29,6 +29,10 @@
 
 extern char *_WINGS_progname;
 
+int WErrorCode = 0;
+
+
+
 #define MAXLINE	1024
 
 
@@ -142,3 +146,33 @@ wsyserror(const char *msg, ...)
     va_end(args);
 }
 
+
+/*********************************************************************
+ * Prints a system error message with variable arguments, being given
+ * the error code.
+ * 
+ * error - the error code foe which to print the message
+ * msg   - message to print with optional formatting
+ * ...   - arguments to use on formatting
+ *********************************************************************/
+void 
+wsyserrorwithcode(int error, const char *msg, ...)
+{
+    va_list args;
+    char buf[MAXLINE];
+
+    va_start(args, msg);
+    vsprintf(buf, msg, args);
+    fflush(stdout);
+    fputs(_WINGS_progname, stderr);
+    fputs(" error: ", stderr);
+    strcat(buf, ": ");
+    strcat(buf, wstrerror(error));
+    strcat(buf,"\n");
+    fputs(buf, stderr);
+    fflush(stderr);
+    fflush(stdout);
+    va_end(args);
+}
+
+